EP 2369723 A2 20110928 - Cooling arrangement for an electric machine
Title (en)
Cooling arrangement for an electric machine
Title (de)
Kühlanordnung für eine elektrische Maschine
Title (fr)
Agencement de refroidisseur pour machine électrique
Publication
Application
Priority
US 72939910 A 20100323
Abstract (en)
An electric machine includes a stator (28) having an outer circumference (32). Spaced apart first walls (40) are arranged about the outer circumference (32) and provide generally parallel first channels (44). A second wall (42) adjoins the first wall (44) and is arranged about the outer circumference providing a second channel (46) in fluid communication with the first channels (44), thus, providing a tortuous fluid flow path (T) about the circumference. The first and second channels (44,46) have an inner surface. A structure (62) is provided within at least one of the first and second channels (44,46). The structure has an outer surface (70) spaced radially outward from the inner surface (39) and at least partially defines the tortuous flow path (T) between the outer and inner surfaces. The stator (28) includes an end turn (58). An end cap (60) extends axially and radially outward from the stator (28) and provides an enclosure about the end turn in fluid communication with the exit (50) associated with the flow path.
IPC 8 full level
H02K 1/20 (2006.01); H02K 5/18 (2006.01); H02K 5/20 (2006.01); H02K 7/20 (2006.01); H02K 9/00 (2006.01); H02K 9/197 (2006.01)
CPC (source: EP US)
H02K 1/20 (2013.01 - EP US); H02K 5/18 (2013.01 - US); H02K 5/203 (2021.01 - EP US); H02K 7/20 (2013.01 - EP US); H02K 9/00 (2013.01 - US); H02K 9/197 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2369723 A2 20110928; EP 2369723 A3 20151111; EP 2369723 B1 20171129; US 2011234029 A1 20110929; US 2013234545 A1 20130912; US 8525375 B2 20130903; US 8829744 B2 20140909
DOCDB simple family (application)
EP 11250358 A 20110322; US 201313865273 A 20130418; US 72939910 A 20100323